Improvement in clamps



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Clamps.

Patented July 15, 1873'.

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JOHN E. SINCLAIE, OF WORCESTER, MASSACHUSETTS.

IMPROVEMENT IN CLAMPS.

Specification formn gpart of Letters Patent No. 140,@52, dated July 15,1873 application iled November 11, 1872.

To all whom 'it may concern:

Be it known that I, J oEN E. SINCLAIR, of Worcester, in the county ofWorcester and State of Massachusetts, have invented certain Improvementsin Clamps, of which the following is a specification:

My invention relates to a combination of the parts a, b, and cconstituting an adjustable clamp.

a represents the bar of4 the clamp, upon which the piece b moves freelywhen any force is applied to it directly. The piece c is connected to bby a joint, e, about which it may have. an angular motion.

The clamp is used as follows, with the screw d turned back: The objectto be held is placed against the face m, when the pieces b and c are,together, pushed along the bar c until m'

